Effect of different surface treatment modalities on crystal structure and biaxial flexural strength of super translucent zirconia. | ||||
| Egyptian Dental Journal | ||||
| Article 26, Volume 67, Issue 2 - Serial Number 4, April 2021, Page 1593-1599 PDF (592.74 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/edj.2021.64733.1523 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Lamia Dawood   1; Mahy Hassouna2
| ||||
| 1Associate Professor, Fixed Prosthodontics Dept., Faculty of Dentistry, Mansoura University, Mansoura, Egypt | ||||
| 2Assistant Professor, Fixed Prosthodontics Dept., Faculty of Dentistry, Mansoura University, Mansoura, Egypt | ||||
| Abstract | ||||
| Objectives: To study the outcome of different surface treatments on X ray diffraction analysis (XRD) and flexural strength of super translucent zirconia. Materials and Methods: Forty identical discs were milled from presintered super translucent zirconia blank (VITA YZ ST, VITA Zahnfabrik, Germany). Specimens were classified into 4 groups according to the surface treatment used: Group C: no treatment (control group), Group S: discs were airborne particle, Group P: discs were treated with primer and Group SP: discs were airborne particle then, they were treated with primer. All specimens were subjected to XRD analysis and biaxial flexural strength test. Results: The highest biaxial flexural strength recorded value was for the C group (462.11±17.33 MPa) while the lowest one was recorded for S group (310.33±7.78 MPa). Applying one way ANOVA and Tukey test revealed a statistically significant difference among all tested groups. The XRD analysis of specimens that were treated with different surface treatments revealed the evolution of monoclinic phase transformation in groups S and SP. Conclusions: The airborne particle abrasion resulted in the evolution of tetragonal to monoclinic phase transformation on the zirconia surface which in turn negatively affected the flexural strength of super translucent zirconia. | ||||
| Keywords | ||||
| Super translucent zirconia; Biaxial flexure strength; Airborne particle abrasion; Primer; XRD | ||||
|
Statistics Article View: 192 PDF Download: 234 |
||||
